CircuitBreakerEngine
class CircuitBreakerEngine
using System;
using System.Collections.Generic;
using System.Linq;
namespace Polly.CircuitBreaker
{
internal class CircuitBreakerEngine
{
internal static void Implementation(Action action, Context context, IEnumerable<ExceptionPredicate> shouldHandlePredicates, ICircuitController breakerController)
{
ThrowIfCircuitBroken(breakerController);
try {
action();
breakerController.OnActionSuccess(context);
} catch (Exception ex2) {
Exception ex;
Exception ex3 = ex = ex2;
if (!shouldHandlePredicates.Any((ExceptionPredicate predicate) => predicate(ex)))
throw;
breakerController.OnActionFailure(ex, context);
throw;
}
}
private static void ThrowIfCircuitBroken(ICircuitController breakerController)
{
switch (breakerController.CircuitState) {
case CircuitState.Closed:
case CircuitState.HalfOpen:
break;
case CircuitState.Open:
throw new BrokenCircuitException("The circuit is now open and is not allowing calls.", breakerController.LastException);
case CircuitState.Isolated:
throw new IsolatedCircuitException("The circuit is manually held open and is not allowing calls.");
default:
throw new InvalidOperationException("Unhandled CircuitState.");
}
}
}
}